JP2015027799A - Apparatus for paste material printing, and printing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for printing, capable of supporting high mixed manufacturing requirements by itself, and a printing method.SOLUTION: A screen printer comprises: a printing chamber; and a plurality of support members in the form of lifting tables arranged adjacent to one another along a single conveying path for individually supporting respective PCBs 202, 204 in the printing chamber. The screen printer further includes a stencil 120 having a plurality of print patterns 124, 126 with each print pattern 124, 126 arranged adjacent to another print pattern to correspond to the positions of the lifting tables with each print pattern 124, 126 corresponding to a desired paste pattern to be printed onto the PCBs. The screen printer also includes a paste printer arranged to print paste material on the at least one substrate using at least one of the print patterns.

Description

  The present invention relates to screen printers, and more particularly to printing paste materials, but not excluding others. The present invention also relates to a screen printing method.

  A conventional screen mounting machine ("SMT") production line usually has one screen printer. However, when printing mass-consumed products such as printed circuit boards ("PCBs"), especially for mobile phones and automotive parts, two or more screen printers may be used to achieve higher throughput. is there. In a multi-item environment with a smaller batch size and more line switching, if there are more than two screen printers, when one printer is reconfigured, the other printers will continue to operate This is convenient because the line pause time is shortened. However, when there is a brief pause, the maximum capacity of the two printers is not utilized, increasing the value of screen printing compared to the cost of the entire line.

  In a first aspect of the invention, a printing chamber and a plurality of support members for supporting one or more substrates in the printing chamber, the single member for transporting the one or more substrates A plurality of support members capable of individually supporting a respective substrate at a printing position, and a stencil having a plurality of printing patterns, At least one substrate arranged adjacent to another print pattern so that the print pattern corresponds to the position of the support member, each print pattern being supported by one of the support members at the print position Arrange to print the paste material on at least one substrate using a stencil corresponding to the desired paste pattern to be printed on and at least one of the print patterns A screen printing machine is provided.

  References to “paste materials” as used in this application include solder pastes, adhesives, epoxy materials, etc., depending on what is to be printed on the substrate.

  References to “screen printer” and “screen printing” as used in this application include any kind of apparatus or process for printing paste material.

  The advantage of the described embodiment is that the screen printing machine performs a continuous operation / printing by arranging a plurality of support members adjacent to each other along the axis of the single lane conveyor of the printing machine. This allows greater flexibility and options. For example, a screen printing machine can be configured to process one substrate at a time by configuring the support members accordingly, when only one side of the substrate is ready for processing. , May help to ramp up and down the line. Screen printers can also be configured to print different paste heights on the same substrate using multiple print patterns (in this case, the print pattern is the same, but the stencil (or screen) The foil is adjusted accordingly). The screen printing machine is also configured to sequentially print two substrates in a printing chamber by having a support member configured to support two substrates disposed adjacent to each other. obtain. As can be appreciated, the screen printer may then be customized for various operations.

  Preferably, the screen printer is configured to select one or more of the support members for supporting each substrate depending on the number of substrates received at any one time in the printing chamber. A processor is further provided. This provides greater flexibility for configuring the printing press for various operations. In this configuration, the screen printer is configured to selectively apply paste material to one or more substrates using one or more of the printed patterns, as appropriate selected by the processor. Good.

  The printing chamber may be configured to receive a first substrate and a second substrate, and the plurality of support members each include a first substrate disposed to support the first substrate and the second substrate. A support member and a second support member are included. In other words, the screen printer is configured to process two substrates at a time. In order to move the first substrate between the transfer position for moving the first substrate in and out of the printing chamber, the vision position for reference point recognition of the first substrate, and the printing position. The one support member and the stencil may be movable relative to each other so as to adjust the relative distance of each.

  A second support member for moving the second substrate between a transfer position for moving the second substrate in and out of the printing chamber, a visual position for reference point recognition of the second substrate, and a printing position; And the stencil may also be movable relative to each other to adjust the relative distance of each.

  Preferably, the first support member and the second support member are used to sequentially register the first print pattern and the second print pattern together with the desired paste patterns of the first substrate and the second substrate, respectively. May be configured to be separately aligned with respect to the stencil, and the paste printing machine is configured to sequentially print the paste material on the first support member and the second support member. Good.

  The paste printing machine can include a single print head, the single print head prints the paste material on the first substrate and the second substrate for printing the paste material on the first substrate Between the second positions to be moved linearly relative to the stencil along the first axis. A single print head may include one squeegee blade or a set of multiple squeegee blades.

  In the alternative, it is contemplated that the paste printer may include two print heads configured to print paste material on the first substrate and the second substrate, respectively. In this case, each print head may include one or more squeegee blades.

  The screen printing machine may include a plurality of substrate stoppers, each substrate stopper being arranged to stop each substrate in place when transporting two or more substrates into the printing chamber. Preferably, the plurality of print patterns may include two print patterns, and the plurality of support members may include two support members. It is contemplated that one print pattern may be different from the other print pattern, or the two print patterns may be the same.

  Preferably, the thickness of the stencil may be variable. In this way, a paste material of varying depth may be deposited on the substrate.

  In a second aspect of the present invention, a step of providing a print chamber and a step of disposing a plurality of support members for supporting one or more substrates in the print chamber, the plurality of support members comprising: Steps adjacent to each other along a single transport path for transporting one or more substrates, each support member being capable of individually supporting a substrate in a printing position, and multiple printing Providing a stencil having a pattern, wherein each printed pattern is disposed adjacent to each other to correspond to an adjacent arrangement of support members, and at least one substrate comprising a desired paste pattern, Supporting at a printing position using one of the support members and at least one print pattern of the print pattern corresponding to the desired paste pattern Using a screen printing method comprising the steps of printing a paste material on at least one substrate is provided.

  The method may further include selecting one or more of the support members for supporting each substrate depending on the number of substrates received at any one time in the printing chamber. Accordingly, the method may further include selectively applying a paste material to the one or more substrates using at least one of the printed patterns in response to this selection.

  The method further includes receiving the first substrate and the second substrate in the print chamber, and supporting the first substrate and the second substrate with the first support member and the second support member, respectively. May be included. Preferably, the method includes the reference of the first substrate and the second substrate from a transfer position where the first substrate and the second substrate are moved in and out of the printing chamber. Moving the first support member, the second support member and the stencil relative to each other so as to adjust their relative distances to move to a visual recognition position for point recognition and then to a printing position. May further be included.

  The method includes the steps of aligning a stencil with a second support member at a visual recognition position to register a second print pattern with respect to a second substrate, and at the print position, the second print pattern. And printing a paste material on the second substrate. In this printing method, the relative distance between the first support member and the stencil and the relative distance between the second support member and the stencil are adjusted away from each other to adjust the first substrate and the printed second stencil. Separating the substrate from the support member, aligning the stencil with the first support member, registering the first print pattern for the first substrate, and moving the first support member to the print position The method may further include the step of moving and printing the paste material on the first substrate using the first printing pattern. In this way, the above sequence of operations allows each substrate to be individually aligned with respect to the stencil without having to duplicate the alignment mechanism for the two print areas.

  The method changes the relative position between the first support member and the stencil and the relative position between the second support member and the stencil to move the first substrate and the second substrate to the transfer position. And transferring the first substrate and the second substrate from the printing chamber.

  If the printing machine has a single print head, this method can use a single print head to paste the paste material on the first substrate and the second substrate for printing the paste material on the first substrate. Moving between a second position for printing and linearly relative to the stencil along a first axis may be included. In an alternative, the printing machine may have two print heads for printing the paste material, the method using the respective print heads to paste the paste material on the first substrate and the second substrate. Printing.

  The method may include transporting two or more substrates into the printing chamber and stopping each substrate in place using a respective substrate stopper.

  It should be understood that features associated with one aspect may also apply to other aspects.

  An example of the invention will now be described with reference to the accompanying drawings.

1 is a perspective view of a screen printing machine according to a preferred embodiment of the present invention with a cover raised to show a stencil placed in a printing chamber and used to print a paste. FIG. FIG. 2 is a control block diagram of the screen printing machine of FIG. FIG. 2 is an enlarged top view of the stencil of FIG. 1 in the print chamber (other components of the printing press are omitted), with the first PCB and the second PCB being transferred into the print chamber. FIG. FIG. 4 is a simplified end view of FIG. 3 viewed from direction A shown in FIG. 3, with the first PCB and the second PCB with the first PCB and the second PCB under the stencil in the print chamber. It is a figure which shows one step which performs paste printing of PCB. FIG. 4 is a simplified end view of FIG. 3 viewed from direction A shown in FIG. 3, with the first PCB and the second PCB with the first PCB and the second PCB under the stencil in the print chamber. It is a figure which shows one step which performs paste printing of PCB. FIG. 4 is a simplified end view of FIG. 3 viewed from direction A shown in FIG. 3, with the first PCB and the second PCB with the first PCB and the second PCB under the stencil in the print chamber. It is a figure which shows one step which performs paste printing of PCB. FIG. 4 is a simplified end view of FIG. 3 viewed from direction A shown in FIG. 3, with the first PCB and the second PCB with the first PCB and the second PCB under the stencil in the print chamber. It is a figure which shows one step which performs paste printing of PCB. FIG. 4 is a simplified end view of FIG. 3 viewed from direction A shown in FIG. 3, with the first PCB and the second PCB with the first PCB and the second PCB under the stencil in the print chamber. It is a figure which shows one step which performs paste printing of PCB. FIG. 4 is a simplified end view of FIG. 3 viewed from direction A shown in FIG. 3, with the first PCB and the second PCB with the first PCB and the second PCB under the stencil in the print chamber. It is a figure which shows one step which performs paste printing of PCB. FIG. 10 is a top view of the first PCB 202 and the second PCB 204, and shows the PCB after the paste printing of FIGS. 4 to 9 is completed.

  FIG. 1 illustrates a single lane conveyor for transporting a substrate, such as a printed circuit board (PCB) 200, into the printing chamber 104 of the screen printing machine 100 in an end-to-end relationship from end to end of the printing chamber. 1 is a perspective view of a screen printing machine 100 including a system 102. FIG. The screen printing machine 100 includes a pair of pivotable covers 106, shown in the open position in FIG. 1, to allow access to the print chamber 104, and the pivotable pair of covers 106 is normally closed during the operation of the screen printing machine 100. The screen printing machine 100 further includes a plurality of protective panels 108.

  FIG. 2 is a control block diagram of the screen printing machine 100 of FIG. 1, with a processor 110 for controlling two PCB stoppers 112, and a movable support in the form of a first lifting block 114 and a second lifting block 116 It includes a member, an image acquisition device in the form of a reference camera 118, a stencil 120, and a paste printer 122 for printing paste material on the PCB 200.

  The operation of the control block diagram of the printing press 100 will be described in conjunction with FIGS. 2 and 3-10, and the screen printing press 100, in this embodiment, has two PCBs 200 substantially simultaneously. Configured to process. FIG. 3 is an enlarged top view of the stencil 120 of FIGS. 1 and 2 (other components of the screen printing machine 100 of FIG. 1 are omitted), and the first PCB 202 and the second PCB 204 are , And transferred under the stencil 120 into the printing chamber 104. 4-9 are simplified end views in the direction A of FIG. 3, where the first PCB 202 and the second PCB 204 are transferred under the stencil 120 to provide the first PCB 202 and the second PCB. It describes the various steps in which 204 paste printing is performed. FIG. 10 is a top view of the first PCB 202 and the second PCB 204, showing the PCBs 202, 204 after the paste printing of FIGS. 4-9 has been completed.

  In this embodiment, the conveyor system 102 is configured to transport the PCB 200 in an end-to-end relationship, which includes a first PCB 202 and a second PCB 204 as shown in FIG. Into the print chamber 104 together in direction B (ie, in pairs). The PCBs 202, 204 are processed in the normal manner prior to entering the print chamber 104, which may include reading their bar codes for identification. The stencil 120 is mounted in the print chamber 104 in the normal manner, but in this embodiment, the stencil 120 is provided with a first print pattern 124 and a second print pattern disposed end-to-end along the X axis of the stencil 120. Each printed pattern 124, 126 has a plurality of openings 128, 130 through which paste material is deposited on the respective solder pads of the first PCB 202 and the second PCB 204. Is done. In other words, the print patterns 124 and 126 are arranged so as to correspond to the pad layouts (or desired paste patterns) of the PCBs 202 and 204, respectively. In the illustrated embodiment, the first print pattern 124 corresponds to the pad layout of the first PCB 202, and the second print pattern 126 corresponds to the pad layout of the second PCB 204. The first print pattern and the second print pattern are arranged end-to-end along the X axis, which means that the first PCB and the second PCB are also along the X axis (i.e. the Y of the stencil 120). It is meant to be placed in the print chamber 104 end-to-end (substantially perpendicular to the axis).

  At a designated imaging position within the print chamber 104, the processor 110 causes the PCB stopper 112 to protrude or extend, and each dedicated PCB stopper 112 causes each of the first PCB 202 and the second PCB 204 to be Stop along the conveyor system 102 at the transfer position (ie, the level at which the conveyor system 102 transfers the PCBs 202, 204). The processor 110 then activates the first lifting block 114 and the second lifting block 116, each lifting block 114, 116 being defined by a single lane conveyor system 102 as shown in FIG. Are arranged adjacent to each other under the respective first PCB 202 and second PCB 204 along a single transport path. Each lifting block 114, 116 can individually support a respective PCB 202, 204. In this embodiment, the lifting blocks 114 and 116 are further supported by the lifting table 117. Next, the two PCB stoppers 112 are moved backward, and the lifting table 117 is lifted to raise the first lifting block 114 and the second lifting block 116 as a whole. The PCB 202 and the second PCB 204 can be supported, and the PCBs 202, 204 can be moved to a visual position (along the Z axis) as shown in FIG. In the visual position, the processor 110 first determines the first PCB 202 to determine or measure the exact relative position between the first PCB 202 and the stencil 120 and between the second PCB 204 and the stencil 120. The reference camera 118 is configured to perform reference point recognition of a plurality of reference markers on 202 and stencil 120, and then to perform reference point recognition of each reference marker on second PCB 204 and stencil 120. Operate.

  Based on the relative positions measured between the first PCB 202 and the stencil 120 and between the second PCB 204 and the stencil 120, the processor 110 performs the stencil 120 (specifically, the first printed pattern 124 and the first stencil 120). Calculate any adjustments that may be required to align the second printed pattern 126) with respect to the respective pad layouts of the first PCB 202 and the second PCB 204. Next, the processor 110 adjusts the lower surface 132 of the stencil 120 to align with one of the PCBs 202, 204 based on the calculated adjustment amount, where the first alignment is: This is to allow the second printed pattern 126 of the stencil 120 to be registered along with the pad layout of the second PCB 204.

  As shown in FIG. 6, the lifting table 117 raises both the first lifting block 114 and the second lifting block 116 in the Z-axis so that each of the first PCB 202 and the second PCB 204 is moved. Stencil height, i.e. raised to the printing position, i.e. lifted, the stencil 120 is aligned with the second PCB 204 and the processor 110 moves the paste press 122 to the second printing pattern 126. To operate. In this embodiment, the paste printer 122 includes a paste dispenser 136 for dispensing an amount of solder paste on the top surface 134 of the stencil 120 with respect to the second print pattern 126, and a plurality of solder pastes. A printhead that includes a set of squeegee blades 138 for spreading the dispensed solder paste over the second printed pattern 126 of the stencil 120 for deposition onto the corresponding solder pads of the second PCB 204 through the openings 130 Including. It should be understood that the set of squeegee blades 138 is configured to move along the Y axis as the solder paste is stretched across the second printed pattern 126 (see FIG. 3).

  After printing the second PCB 204, by lowering the lift table 117, both the PCBs 202 and 204 are lowered by a few millimeters. In addition, the second PCB 204 is further lowered vertically along the micro-Z axis by lowering the second lift block 116 by a corresponding amount, and the first PCB 202 / first lift block 114 The relative position between the second PCB 204 / second lifting block 116 and the stencil 118 is shown in FIG. Each lifting block 114, 116 is individually controlled to move the substrate support surfaces 113, 115 of each lifting block 114, 116 independently by a few millimeters (for example, between 3mm and 5mm) along the micro-Z axis It should be mentioned that it includes possible mechanisms (eg electric motors or hydraulic application machines). When both PCBs 202 and 204 are degraded, processor 110 causes stencil 120 to be based on the reference point measurement described above so that first printed pattern 124 is registered with the corresponding pad layout of first PCB 202. Align again.

  When the stencil 120 is realigned, the processor 110 actuates the lifting table 117 to lift both the first lifting block 114 and the second lifting block 116, thus raising the first PCB 202. Engaging the lower surface 132 of the stencil 120, while the second PCB 204 is kept in a lower position (as previously described). Therefore, the second PCB 204 (already printed with solder paste) is spaced from the stencil 120. This arrangement is shown in FIG. Next, the processor 110 activates the paste printing machine 122 to change the position of the first printing pattern 124 from the position of the second printing pattern 126 (the paste printing machine 122 is indicated by a broken line in FIG. 8). (Ie, onto the first PCB 202 as shown in FIG. 8) and move linearly along the X axis (arrow C).

  Next, the paste dispenser 136 discharges a further predetermined amount of solder paste onto the upper surface 134 of the stencil 120 in relation to the first printing pattern 124, and then the set of squeegee blades 138 is used for the first printing. Controlled to move in the Y-axis to extend the solder paste over the pattern 124, so that the solder paste is deposited on the first PCB 202 by the first printed pattern 124.

  After the first PCB 202 is also printed, both PCBs 202 and 204 are lowered to the transfer level as shown in FIG. 9 by lowering the lifting table 117, and the printed PCBs 202, 204 are The system 102 leaves the printing chamber 104 and is transferred from the printing press 100. FIG. 10 is a top view of the stencil 120 and the two printed PCBs 202, 204, the two PCBs 202, 204 being printed using a solder paste based on the printed patterns 124, 126 of the stencil 120 Please understand that.

  With such a mechanism, only one printing press 100 (and thus only one stencil 120) is needed to meet the demands of multi-item manufacturing, and optionally 202, 204-2 It has a single print head (in the form of a set of squeegee blades 138) for paste printing one PCB in sequence. This series of operations allows individual PCBs 202, 204 to be aligned to the stencil 120 without having to develop an alignment algorithm and a separate mechanical alignment mechanism for aligning two printed patterns simultaneously. . This avoids the need to have a separate printing machine, as one printing machine can print different printing patterns (or images), thus saving costs and expenses. By adding the two lifting blocks 114 and 116, specifically, when the two lifting blocks 114 and 116 are supported by the lifting table 117, a new function becomes possible. As can be appreciated from the described embodiment, the lift table 117 serves to raise and lower the lift blocks 114, 116 to raise and lower the PCBs 202, 204 on the lift block between the transport level and the visual level. The lift table also moves the lift blocks 114, 116, and thus the PCBs 202, 204, between the visual level and the print level, but in this case, adding the lift blocks 114, 116 further Z during this operation Axis movement is provided, whereby each elevating block uses the main Z movement of the elevating table with or without the "micro Z" axis movement enabled by elevating blocks 114, 116 Thus, one or the other of the PCBs 202 and 204 can be selectively submitted to the stencil 120.

  Since a single press can be used to perform paste printing of two PCBs 202, 204 in sequence, it can be applied to separate PCBs 202, 204 with appropriate changes to the print patterns 124, 126. Different print patterns can be printed. The print patterns 124, 126 to be printed on two consecutive PCBs 202, 204 may be the same, so that the two PCBs are put together in the print chamber 104, rather than one after another into the print chamber 104. It is also intended to be possible to process.

  Another possibility is to use the proposed mechanism and method to print small features with a low level paste, for example 0.03 mm high. This may be done using the first print area of the stencil 120 and then the second print area of the stencil 120 to print a larger paste volume on the same PCB using the second print area. To make it possible, a thicker foil, eg 0.15 mm, may be used. In the second printing area of the stencil 120, when depositing 0.15 mm paste, a cavity may be provided under the stencil 120 to prevent contact with the 0.03 mm paste deposited from the first printing area. In other words, by printing a stencil 120 with two print areas (or print patterns) each having a separate foil / stencil thickness, printing such paste using a single press. Can be completed.

  Indeed, the screen printer 100 may be configured to process one PCB at a time by programming the processor 110 accordingly. In this way, the processor 110 may be configured to select to use one or two (or more) of the lifting blocks 114, 116. For example, when processing only one PCB, only one of the lifting blocks 114, 116 is activated to support the PCBs individually. This is particularly useful for ramping up and down the line when it is possible that only one side of the PCB may be ready for processing. Thus, the paste printer can be applied by the processor to selectively apply paste material to one or two (or more) substrates, depending on the number of substrates to be processed in the print chamber 104. May be configured.

  If one PCB 204 has been printed and the other PCB 202 is to be printed, the printed PCB 204 is lowered to the transfer level and transported to the next processing station, while new in the first print area of the print chamber. It is also possible to put in a PCB.

  The described embodiments should not be construed as limiting. For example, the described embodiments may be adapted for stencil printers as well as screen printers. This printing may be performed not only on the PCB but also on other types of substrates (such as ceramic substrates). Similarly, not only solder pastes, but other types of paste materials such as epoxy materials may be used. Further, the printing patterns 124, 126 of the stencil 120 may be the same image or separate images, and similarly, the printing machine 100 may be configured to print paste materials of different particle sizes on the same PCB.

  In the described embodiment, to print the second PCB 204, the second printed pattern 126 of the stencil 120 is first registered / registered with respect to the second PCB 204, but the stencil It will be apparent that the first PCB 202 may be registered first (and thus printed first) for the 120 first print patterns 124, followed by the second PCB 204.

  The number of print head / squeegee blades 138 need not be one. Multiple print heads may be used instead of one. Similarly, the number of paste dispensers 136 may be plural. In order to adjust each relative distance between the stencil 120 and the substrates 202, 204, the support member can clamp and support each substrate individually instead of using the lifting blocks 114, 116. It may be in the form of In fact, each relative distance between the stencil 120 and the PCB 202, 204 does not necessarily move the PCB 202, 204 up and down, but moves the stencil 120 (while maintaining the position of the two PCBs 202, 204). You may adjust by. Further, in the described embodiment, the lifting table 117 is used to raise and lower the two lifting blocks 114, 116 as a whole in several steps, but the two lifting blocks 114 and 116 are separate. In addition, since they may be moved synchronously, it is not necessary to raise and lower as a whole.

  Also, although the described embodiment describes the use of a pair of PCB stoppers, the number of stoppers may vary depending on the application (in fact, the support used such as the lifting blocks 114, 116 etc. The number of members may be more than two). In addition, other ways of stopping the PCB (eg, an infrared light sensor) may be contemplated.

  Although the invention has been fully described herein, it will be apparent to those skilled in the art that many modifications can be made without departing from the scope of the claimed invention.

100 screen printing machine
102 Conveyor system
104 printing chamber
106 pivotable twin cover
108 Protection panel
110 processor
112 2 PCB stoppers
113 Substrate support surface
114 First lifting block
115 Substrate support surface
116 Second lifting block
117 Lifting table
118 Reference camera
120 Stencil
122 paste printer
124 First print pattern
126 Second print pattern
128 openings
130 opening
132 Bottom of stencil 120
134 Top view of stencil 120
136 paste dispenser
138 Squeegee blade
200 Printed Circuit Board (PCB)
202 First PCB
204 Second PCB

Claims (25)

A printing chamber;
A plurality of support members for supporting one or more substrates in the printing chamber, arranged adjacent to each other along a single transport path for transporting the one or more substrates A plurality of support members, each support member capable of individually supporting a respective substrate in a printing position;
A stencil having a plurality of print patterns, wherein each print pattern is arranged adjacent to another print pattern so as to correspond to the position of the support member, and each print pattern is supported at the print position. A stencil corresponding to the desired paste pattern to be printed on at least one substrate supported by one of the members;
A screen printing machine comprising: a paste printing machine arranged to print a paste material on the at least one substrate using at least one of the printing patterns.   Further comprising a processor configured to select one or more of the support members for supporting each substrate, depending on the number of substrates received at any one time in the printing chamber. The screen printing machine according to claim 1.   The paste printer is configured to selectively apply the paste material to the one or more substrates using one or more of the print patterns in response to selection by the processor. The screen printing machine according to claim 2.   The printing chamber is configured to receive a first substrate and a second substrate, and the plurality of support members are arranged to support the first substrate and the second substrate, respectively. The screen printing machine according to claim 1, further comprising a first support member and a second support member.   In order to move the first substrate between a transfer position for moving the first substrate in and out of the printing chamber, a visual position for reference point recognition of the first substrate, and the printing position, 5. The screen printing machine according to claim 4, wherein the first support member and the stencil are movable with respect to each other so as to adjust a relative distance between them.   To move the second substrate between the transfer position for moving the second substrate in and out of the printing chamber, the visual position for reference point recognition of the second substrate, and the printing position 6. The screen printing machine according to claim 5, wherein the second support member and the stencil are movable with respect to each other so as to adjust a relative distance between them.   In order to sequentially register the first print pattern and the second print pattern of the print patterns together with the desired paste patterns of the first substrate and the second substrate, the first support member and The second support member is configured to be separately aligned with respect to the stencil, and the paste printer is located on the first support member and the second support member. 5. The screen printing machine according to claim 4, wherein the screen printing machine is configured to sequentially print the paste material on the substrate.   Between the first position for printing the paste material on the first substrate and the second position for printing the paste material on the second substrate; 8. A screen printing press according to claim 7, comprising a single print head configured to move linearly relative to the stencil along one axis.   8. The screen printer according to claim 7, wherein the paste printer includes two print heads configured to print the paste material on the first substrate and the second substrate, respectively.   A plurality of substrate stoppers, each comprising a plurality of substrate stoppers each disposed to stop each substrate in place when transporting two or more substrates into the printing chamber. Item 4. A screen printing machine according to Item 1.   2. The screen printing machine according to claim 1, wherein the plurality of print patterns include two print patterns, and the plurality of support members include two support members.   12. The screen printing machine according to claim 11, wherein one print pattern is different from the other print pattern.   12. The screen printer according to claim 11, wherein the two printing patterns are the same.   14. The screen printer according to claim 13, wherein the thickness of the stencil is variable. Providing a printing chamber;
Placing a plurality of support members in the printing chamber for supporting one or more substrates, wherein the plurality of support members are single for transporting the one or more substrates. Arranged adjacent to each other along the transport path, each support member individually supporting a substrate in a printing position;
Providing a stencil having a plurality of print patterns, each print pattern being disposed adjacent to another print pattern to correspond to the adjacent arrangement of the support member;
Supporting at least one substrate including a desired paste pattern at the printing position using one of the support members;
Printing a paste material on the at least one substrate using at least one print pattern of the print patterns corresponding to the desired paste pattern.   16. The method of claim 15, further comprising selecting one or more of the support members for supporting each substrate depending on the number of substrates received at any one time in the print chamber. Screen printing method.   17. The screen printing method according to claim 16, further comprising the step of selectively applying the paste material to the one or more substrates using at least one of the printing patterns in response to the selection. .   Receiving a first substrate and a second substrate in the print chamber; and supporting the first substrate and the second substrate using a first support member and a second support member, respectively. The screen printing method according to claim 15, further comprising:   The reference of the first substrate and the second substrate from the transfer position where the first substrate and the second substrate are taken in and out of the first chamber with respect to the printing chamber. The first support member, the second support member and the stencil relative to each other so as to adjust their relative distances to move to a visual recognition position for point recognition and then to the printing position. 19. The screen printing method according to claim 18, further comprising a step of moving the screen.   Aligning the stencil with the second support member at the visual recognition position to register a second print pattern on the second substrate; and at the print position, the second print pattern. The screen printing method according to claim 19, further comprising: printing the paste material on the second substrate using The relative distance between the first support member and the stencil and the relative distance between the second support member and the stencil are adjusted away from each other to adjust the first substrate and the printed second Separating the substrate from the support member;
Aligning the stencil with the first support member and registering a first print pattern of the print patterns on the first substrate;
Moving the first support member to the printing position;
21. The screen printing method according to claim 20, further comprising: printing the paste material on the first substrate using the first printing pattern.   The relative position between the first support member and the stencil and the relative position between the second support member and the stencil are changed to move the first substrate and the second substrate to the transfer position. 22. The screen printing method according to claim 21, further comprising the steps of: transferring the first substrate and the second substrate from the printing chamber.   Providing a single print head for printing the paste material, the single print head comprising a first position for printing the paste material on the first substrate and the The screen of claim 18, comprising moving linearly relative to the stencil along a first axis between a second position for printing the paste material on a second substrate. Printing method.   Providing two print heads for printing the paste material; printing the paste material on the first substrate and the second substrate using the respective print heads; The screen printing method according to claim 18, comprising:   19. The screen printing method of claim 18, further comprising transporting two or more substrates into the printing chamber and stopping each substrate at a predetermined position using a respective substrate stopper.